Nuclear Theory·nucl-th

Wednesday·October 3, 2018

7 papers—4 primary·3 cross-listed

05
Recent Results on Heavy Quark Production in High Energy Nucleus Collisions
Xin Dong🇺🇸
The goal of the ultra-relativistic heavy ion program is to study Quantum Chromodynamics under finite temperature and density conditions. After a couple of decades of experiment, the focus at the top RHIC and the LHC energy has evolved to quantitative understanding of properties of the hot and dense medium, namely the strongly-coupled Quark Gluon Plasma (sQGP) created in these heavy-ion collisions, and to constrain transport parameters of the sQGP medium. Heavy quarks offer unique insights towards detailed understanding of the sQGP properties due to their large masses. Recent collider and detector advances have enabled precision measurements of heavy quark hadron production in heavy-ion collisions. In this talk, I will review recent results from heavy quark production measurements at RHIC and the LHC. These high quality data will offer stringent constraints on theoretical model calculations and help precision determination of QGP medium transport parameters. Finally, I look forward to a more prospective future of the heavy quark program with further improved detectors at both RHIC and the LHC.
↳ nucl-exnucl-th4 citations
06
Open-Flavour Mesons from the Angle of Bethe, Dyson, Salpeter, Schwinger, et al
Thomas Hilger🇦🇹 · María Gómez-Rocha🇮🇹 · Andreas Krassnigg🇦🇹 · Wolfgang Lucha🇦🇹
Recently, we completed a comprehensive investigation of a huge part of the entire meson spectrum by considering both quarkonia and open-flavour mesons by means of a single common framework which unites the homogeneous Bethe-Salpeter equation that describes mesons as quark-antiquark bound states and the Dyson-Schwinger equation that governs the full quark propagator: Adopting two (as a matter of fact, not extremely diverse) models that attempt to grasp all principal aspects of the effective strong interactions entering identically in both these equations, we derived within this unique setup, for all mesons analysed, their masses and leptonic decay constants as well as, for the pseudoscalar ones among these mesons, their in-hadron condensates. Here, as a kind of promotion or teaser, we give but a few examples of the resulting collections of data, laying the main emphasis on the dependence of our insights on the effective-interaction model underlying all such outcomes.
↳ hep-phhep-exnucl-thPoS(2018)·1 citation
07
Magnetic field dependence of Delta isobars properties in a Skyrme model
Bing-Ran He🇨🇳
The properties of $Δ$ isobars in a uniform magnetic field are investigated. In the weak magnetic field region, the general relations between magnetic moment of nucleons and $Δ$ isobars are given. In the strong magnetic field region, the mass and size of $Δ$ isobars depend on the increasing of magnetic field strength in different ways: the effective mass of $Δ^{++}$ , $Δ^{+}$ and $Δ^{0}$ first decreases and then increases, consequently, the size of $Δ^{++}$ , $Δ^{+}$ and $Δ^{0}$ first increases and then decreases; whereas, the effective mass of $Δ^{-}$ always increases, and consequently, the size of $Δ^{-}$ always decreases. The estimation shows in the core part of the magnetar, the equation of state for $Δ$ isobars depends on the magnetic field, which affects the mass limit of the magnetar.
↳ hep-phhep-lathep-thnucl-thPRD(2019)·3 citations

Affiliations

first authorsco-authorsvia INSPIRE

Recent Results on Heavy Quark Production in High Energy Nucleus Collisions

Open-Flavour Mesons from the Angle of Bethe, Dyson, Salpeter, Schwinger, et al

Magnetic field dependence of Delta isobars properties in a Skyrme model

Affiliations